1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package diff
import (
"testing"
)
func TestObjectReflectDiff(t *testing.T) {
type struct1 struct{ A []int }
testCases := map[string]struct {
a, b interface{}
out string
}{
"map": {
a: map[string]int{},
b: map[string]int{},
},
"detect nil map": {
a: map[string]int(nil),
b: map[string]int{},
out: `
object:
a: map[string]int(nil)
b: map[string]int{}`,
},
"detect map changes": {
a: map[string]int{"test": 1, "other": 2},
b: map[string]int{"test": 2, "third": 3},
out: `
object[other]:
a: 2
b: <nil>
object[test]:
a: 1
b: 2
object[third]:
a: <nil>
b: 3`,
},
"nil slice": {a: struct1{A: nil}, b: struct1{A: nil}},
"empty slice": {a: struct1{A: []int{}}, b: struct1{A: []int{}}},
"detect slice changes 1": {a: struct1{A: []int{1}}, b: struct1{A: []int{2}}, out: `
object.A[0]:
a: 1
b: 2`,
},
"detect slice changes 2": {a: struct1{A: []int{}}, b: struct1{A: []int{2}}, out: `
object.A[0]:
a: <nil>
b: 2`,
},
"detect slice changes 3": {a: struct1{A: []int{1}}, b: struct1{A: []int{}}, out: `
object.A[0]:
a: 1
b: <nil>`,
},
"detect nil vs empty slices": {a: struct1{A: nil}, b: struct1{A: []int{}}, out: `
object.A:
a: []int(nil)
b: []int{}`,
},
"display type differences": {a: []interface{}{int64(1)}, b: []interface{}{uint64(1)}, out: `
object[0]:
a: 1 (int64)
b: 0x1 (uint64)`,
},
}
for name, test := range testCases {
expect := test.out
if len(expect) == 0 {
expect = "<no diffs>"
}
if actual := ObjectReflectDiff(test.a, test.b); actual != expect {
t.Errorf("%s: unexpected output: %s", name, actual)
}
}
}
func TestStringDiff(t *testing.T) {
diff := StringDiff("aaabb", "aaacc")
expect := "aaa\n\nA: bb\n\nB: cc\n\n"
if diff != expect {
t.Errorf("diff returned %v", diff)
}
}
func TestLimit(t *testing.T) {
testcases := []struct {
a interface{}
b interface{}
expectA string
expectB string
}{
{
a: `short a`,
b: `short b`,
expectA: `"short a"`,
expectB: `"short b"`,
},
{
a: `short a`,
b: `long b needs truncating`,
expectA: `"short a"`,
expectB: `"long b ne...`,
},
{
a: `long a needs truncating`,
b: `long b needs truncating`,
expectA: `...g a needs ...`,
expectB: `...g b needs ...`,
},
{
a: `long common prefix with different stuff at the end of a`,
b: `long common prefix with different stuff at the end of b`,
expectA: `...end of a"`,
expectB: `...end of b"`,
},
{
a: `long common prefix with different stuff at the end of a`,
b: `long common prefix with different stuff at the end of b which continues`,
expectA: `...of a"`,
expectB: `...of b which...`,
},
}
for _, tc := range testcases {
a, b := limit(tc.a, tc.b, 10)
if a != tc.expectA || b != tc.expectB {
t.Errorf("limit(%q, %q)\n\texpected: %s, %s\n\tgot: %s, %s", tc.a, tc.b, tc.expectA, tc.expectB, a, b)
}
}
}
|
